android openGL简例1

最新推荐文章于 2024-12-27 18:33:58 发布

原创最新推荐文章于 2024-12-27 18:33:58 发布 · 83 阅读

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#Android

本文介绍了一个名为VortexView的OpenGL表面视图组件，该组件通过触摸事件来调整渲染角度，实现三维视图的旋转操作。文章详细解析了如何在Android环境下利用GLSurfaceView处理触摸事件，并更新渲染器的状态。

package test.lee.autogl;

import android.content.Context;
import android.opengl.GLSurfaceView;
import android.view.MotionEvent;

public class VortexView extends GLSurfaceView {
private static final String LOG_TAG = VortexView.class.getSimpleName();
private VortexRenderer _renderer;

private float _x = 0;
private float _y = 0;

public VortexView(Context context) {
super(context);
_renderer = new VortexRenderer();
setRenderer(_renderer);
}

@Override
public boolean onTouchEvent(final MotionEvent event) {
/*
queueEvent(new Runnable() {
public void run() {
_renderer.setColor(event.getX() / getWidth(), event.getY() / getHeight(), 1.0f);
_renderer.setAngle(event.getX() / 100);
}
});*/
if (event.getAction() == MotionEvent.ACTION_DOWN) {
_x = event.getX();
_y = event.getY();
}
if (event.getAction() == MotionEvent.ACTION_MOVE) {
final float xdiff = (_x - event.getX());
final float ydiff = (_y - event.getY());
queueEvent(new Runnable() {
public void run() {
_renderer.setXAngle(_renderer.getXAngle() + ydiff);
_renderer.setYAngle(_renderer.getYAngle() + xdiff);
}
});
_x = event.getX();
_y = event.getY();
}
return true;
}

}